Tohutoro APA (7th ed.)

Crayton, C. A. (2004). The A+ exams guide: (exam 220-301), (exam 220-302). Charles River Media.

Tohutoru Kātū Chicago (17th ed.)

Crayton, Christopher A. The A+ Exams Guide: (exam 220-301), (exam 220-302). Hingham, Mass.: Charles River Media, 2004.

Tohutoro MLA (9th ed.)

Crayton, Christopher A. The A+ Exams Guide: (exam 220-301), (exam 220-302). Charles River Media, 2004.